diff --git a/include/wx/msw/chkconf.h b/include/wx/msw/chkconf.h index e760e1f1f9..a980d0445d 100644 --- a/include/wx/msw/chkconf.h +++ b/include/wx/msw/chkconf.h @@ -14,6 +14,16 @@ #ifndef _WX_MSW_CHKCONF_H_ #define _WX_MSW_CHKCONF_H_ +/* ensure that MSW-specific settings are defined */ +#ifndef wxUSE_DC_CACHEING +# ifdef wxABORT_ON_CONFIG_ERROR +# error "wxUSE_DC_CACHEING must be defined" +# else +# define wxUSE_DC_CACHEING 1 +# endif +#endif /* wxUSE_DC_CACHEING */ + + /* * disable the settings which don't work for some compilers */